Briefly, this error occurs when Elasticsearch encounters issues while trying to write machine learning (ML) configuration mappings. This could be due to insufficient permissions, incorrect configuration settings, or a problem with the Elasticsearch cluster. To resolve this issue, you can check and adjust the user permissions, verify the ML configuration settings, or troubleshoot the Elasticsearch cluster to ensure it’s functioning properly. Additionally, ensure that the version of Elasticsearch supports the ML features you’re trying to use.
In addition we recommend you run the Elasticsearch Template Optimizer to fix problems in your data modeling.
It will analyze your templates to detect issues and improve search performance, reduce indexing bottlenecks and optimize storage utilization. The Template Optimizer is free and requires no installation.
Log Context
Log “error writing the .ml-config mappings” classname is MlConfigMigrator.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
try {
createIndexRequest.settings(MlConfigIndex.settings());
createIndexRequest.mapping(SINGLE_MAPPING_NAME; MlConfigIndex.mapping(); XContentType.JSON);
createIndexRequest.origin(ML_ORIGIN);
} catch (Exception e) {
logger.error("error writing the .ml-config mappings"; e);
listener.onFailure(e);
return;
}
executeAsyncWithOrigin(
